Cushion suspension and seat having the same

Abstract

The utility model relates to the technical field of seat components, and particularly relates to a cushion suspension spring and a seat with the same, which comprises a suspension spring framework having a first side and a second side arranged oppositely; a first chain belt movably connected to the first side, which can rotate relative to the suspension spring framework; and a connecting mechanism arranged on the second side. The cushion suspension spring can be rotated relative to the suspension spring framework through the first chain belt, and thus adaptive adjustment of the cushion suspension spring can be realized. The cushion suspension spring is particularly suitable for a seat with a rear lifting function, and can rotate with the rear lifting mechanism in the process of upward lifting of the rear lifting mechanism, thereby avoiding disconnection from the rear lifting mechanism.

Description

Technical Field

[0001] This utility model relates to the technical field of seat components, and specifically to a seat cushion suspension spring and a seat having the seat cushion suspension spring. Background Technology

[0002] Seat cushion springs are elastic frames placed beneath the foam layer inside the seat to support the cushion and absorb vibrations. They can support the weight of the body and determine the softness, firmness, and durability of the cushion. Current seat cushion springs include serpentine springs, which consist of one or more wavy steel wires arranged longitudinally along the cushion and with both ends hanging from the side panels of the frame. They have the advantages of low cost and thinness.

[0003] The applicant's prior Chinese patent (application number 202020179334.0, invention title: connection structure of seat cushion suspension spring and seat cushion half basin) discloses a connection structure of seat cushion suspension spring and seat cushion half basin. The seat cushion suspension spring and seat cushion half basin are connected together to form a seat basin assembly. A foam layer is provided on the seat basin assembly to form a seat cushion. The technical solution of this connection structure is used to improve the stress condition of the seat cushion suspension spring and improve its fatigue resistance.

[0004] As people's demands for seat comfort have increased, the rear-lift function of seats has emerged. Specifically, this function refers to the ability of the rear end of the seat cushion to rise to a certain height when the backrest is reclined, thus eliminating the height difference between the rear end of the seat cushion and the lower end of the backrest. However, if the seat assembly uses the aforementioned patented connection structure between the seat cushion suspension spring and the seat cushion half-basin, a phenomenon may occur where the hook of the seat cushion suspension spring disengages from the rear tube of the rear-lift mechanism when the rear-lift mechanism is in the raised position, resulting in poor stability of the seat assembly. Utility Model Content

[0005] The purpose of this utility model is to overcome the defects of the prior art and provide a seat cushion suspension spring and a seat with the seat cushion suspension spring, so as to solve the problem that the existing seat cushion suspension spring is prone to disengagement of the rear lifting mechanism when applied to a seat with rear lifting function, which leads to poor stability of the seat assembly.

[0006] The technical solution to achieve the above objectives is: This utility model provides a seat cushion suspension spring, comprising: A suspension spring frame having a first side and a second side disposed opposite to each other; A first chain belt is movably connected to the first side, and the first chain belt is rotatable relative to the suspension spring frame; A connecting mechanism located on the second side.

[0007] A further improvement of this utility model is that a first connecting member is provided on the first side of the suspension spring frame corresponding to the first chain belt; The first chain is sleeved on the first connector.

[0008] A further improvement of this utility model is that it also includes a first connecting bracket corresponding to the first chain belt; The first chain is sleeved on the side away from the suspension spring frame on the first connecting bracket, and the first chain can rotate relative to the first connecting bracket.

[0009] A further improvement of this utility model of seat cushion suspension spring is that the connecting mechanism is a hook.

[0010] A further improvement of this invention is that the connecting mechanism is a second chain belt movably connected to the second side, and the second chain belt can rotate relative to the suspension spring frame.

[0011] A further improvement of this utility model is that a second connector is provided on the second side of the suspension spring frame corresponding to the second chain belt; The second chain is fitted onto the second connector.

[0012] A further improvement of this utility model of seat cushion suspension spring is that it also includes a second connecting bracket corresponding to the second chain belt; The second chain is sleeved on the side away from the suspension spring frame on the second connecting bracket, and the second chain can rotate relative to the second connecting bracket.

[0013] A further improvement of this invention is that a limiting part is provided on the suspension spring frame corresponding to the second chain to restrict the movement of the second chain relative to the suspension spring frame.

[0014] A further improvement of this invention is that a limiting part is provided on the suspension spring frame corresponding to the first chain to restrict the movement of the first chain relative to the suspension spring frame.

[0015] This utility model also provides a seat with the above-mentioned seat cushion suspension spring, including a seat frame assembly and a rear lifting mechanism disposed on the seat frame assembly; one of the connecting mechanism and the first chain is connected to the seat frame assembly; the other of the connecting mechanism and the first chain is connected to the rear lifting mechanism.

[0016] The beneficial effects of this utility model of seat cushion suspension spring and seat having the seat cushion suspension spring are as follows: The seat cushion suspension spring of this utility model has a rotatable first chain belt on the suspension spring frame. By rotating the first chain belt relative to the suspension spring frame, the seat cushion suspension spring can be adaptively adjusted. It is particularly suitable for seats with a rear lift function. During the upward lifting process of the rear lift mechanism, the first chain belt and the suspension spring frame can rotate relative to each other to meet the requirements of the length change of the seat cushion suspension spring during the lifting process. The seat cushion suspension spring can follow the rotation of the rear lift mechanism well and avoid the phenomenon of disengagement from the rear lift mechanism.

[0017] The first chain belt on the seat cushion suspension spring of this utility model has both rotation adjustment function and support stiffness, thus meeting the needs of the seat cushion's riding function. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the first embodiment of the seat cushion suspension spring of this utility model.

[0019] Figure 2 This is a structural schematic diagram of another usage state of the seat cushion suspension spring of this utility model.

[0020] Figure 3 This is a schematic diagram of the second embodiment of the seat cushion suspension spring of this utility model.

[0021] Figure 4 This is a schematic diagram of the frame structure of the seat with cushion suspension spring according to the present invention.

[0022] Figure 5 This is a schematic diagram of the rear lifting mechanism of the seat with cushion suspension spring of this utility model in its designed position. Figure 6 This is a schematic diagram of the rear lifting mechanism of the seat with cushion suspension spring of this utility model in the lifted position.

[0023] Explanation of reference numerals in the attached figures: Seat - 10; Seat frame assembly - 11; Front seat basin - 12; Rear lift mechanism - 13; Rear tube - 131; Seat cushion suspension spring-20; suspension spring frame-21; first connector-211; first convex part-2111; connecting piece-212; limiting groove-213; second connector-214; second convex part-2141; first chain belt-22; hook-23; first connecting bracket-24; second chain belt-25; second connecting bracket-26. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0025] See Figure 1This utility model provides a seat cushion suspension spring and a seat incorporating the same spring. The seat cushion suspension spring rotates relative to the spring frame via a first chain to accommodate the length changes of the seat cushion suspension spring during the rear lifting mechanism's lifting process. This avoids disengagement between the seat cushion suspension spring and the rear tube of the rear lifting mechanism, improving the stability of the seat cushion suspension spring connection structure. The structure of the seat cushion suspension spring and the seat incorporating the same spring will be described below with reference to the accompanying drawings.

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0027] See Figure 1 This diagram shows a structural schematic of the first embodiment of the seat cushion suspension spring of this utility model. The following is in conjunction with... Figure 1 The structure of the seat cushion suspension spring of this utility model will be described.

[0028] like Figure 1 As shown, the seat cushion suspension spring 20 of this utility model includes a suspension spring frame 21, a first chain 22, and a connecting mechanism. The suspension spring frame 21 has a first side and a second side that are arranged opposite to each other. The first side and the second side are arranged corresponding to the front and rear of the seat cushion. The first chain 22 is movably connected to the first side and can rotate relative to the suspension spring frame 21. The connecting mechanism is movably connected to the second side and is used to install the seat cushion suspension spring 20. That is, when installing the seat cushion suspension spring 20, it can be connected to other structures such as the seat frame assembly on the seat through the connecting mechanism.

[0029] When in use, the seat cushion suspension spring 20 can be adaptively adjusted by the relative rotation of the first chain belt 22 and the suspension spring frame 21. Especially when it is installed on a seat with a rear lift function, when the rear lift mechanism is raised, the first chain belt 22 and the suspension spring frame 21 can be adaptively adjusted by rotation, avoiding phenomena such as disengagement at the connection between the connecting mechanism and the seat frame assembly that affect stability.

[0030] In one specific embodiment of this utility model, such as Figure 1 As shown, a first connector 211 is provided on the first side of the suspension spring frame 21 corresponding to the first chain 22; the first chain 22 is sleeved on the first connector 211. By sleeved and installed the first chain 22, the first chain 22 can rotate around the first connector 211.

[0031] Furthermore, a limiting part is provided on the suspension spring frame 21 corresponding to the first chain 22 to restrict the movement of the first chain 22 relative to the suspension spring frame 21. The limiting part can restrict the movement of the first chain 22 along the first connector 211.

[0032] The limiting part can be a limiting groove 213 formed on the connecting piece 212 of the suspension spring frame 21 near the first connecting member 211. The limiting groove 213 is connected to the first connecting member 211, and the portion of the first chain 22 sleeved on the first connecting member 211 is located within the limiting groove 213, thereby limiting the movement of the first chain 22 relative to the first connecting member 211. Alternatively, the limiting part can be a recessed structure provided at the first connecting member 211, where the portion of the first chain 22 sleeved on the first connecting member 211 can be engaged with the recessed structure, thereby limiting the movement of the first chain 22 along the first connecting member 211. The limiting part can also be a stop portion provided on the first connecting member 211 on both sides of the first chain 22, thereby limiting the movement of the first chain 22 along the first connecting member 211.

[0033] In a preferred embodiment, the suspension spring frame 21 includes one or more steel wires, which are bent into the required shape. Figure 1 In the example shown, two steel wires are bent into shape, and then multiple connecting pieces 212 are connected to the two steel wires to form a suspension spring frame 21. The steel wires and connecting pieces 212 form a first connecting member 211 at the first side. Limiting grooves 213 are formed on the connecting pieces 212 near the first connecting member 211. The number of limiting grooves 213 corresponds to the number of first chain straps 22, and the number of first chain straps 22 can be selected as needed. Figure 1 The example shown has four chain straps 22. Of course, the suspension spring frame 21 of this utility model is not limited to steel wire; it can also be composed of other components, such as plastic parts, sheet metal parts, etc.

[0034] Furthermore, the seat cushion suspension spring 20 of this utility model also includes a first connecting bracket 24 corresponding to the first chain belt 22; the side of the first chain belt 22 away from the suspension spring frame 21 is sleeved on the first connecting bracket 24, and the first chain belt 22 can rotate relative to the first connecting bracket 24.

[0035] The first connecting bracket 24 is used to install and fix the first chain belt 22. When installing the seat cushion suspension spring 20, the first connecting bracket 24 can be fixed to the corresponding structure, such as the seat frame assembly on the seat.

[0036] If there are multiple first chain belts 24, a connecting member is formed on the first connecting bracket 24 corresponding to each first chain belt 24. The first chain belt 24 is sleeved on the corresponding connecting member. To improve the overall stability of the connecting bracket 24, the connecting members can be connected together by a connecting plate. A fixing part is formed on the first connecting bracket 24 for fixed connection with a corresponding structure, such as the seat frame assembly on a seat. Furthermore, a limiting part can also be provided on the first connecting bracket 24 to limit the movement of the first chain belt 22 relative to the sleeved connecting member. The structure of the limiting part is the same as the structure of the limiting part provided on the suspension spring frame 21.

[0037] Furthermore, such as Figure 1 As shown, the connecting mechanism is a hook 23, which can be hooked onto a corresponding structure, such as the seat frame assembly on a seat. The seat frame assembly can be provided with a convex round part (such as a tube, rod, or other arc-shaped hooking part that facilitates hooking onto the hook 23) to correspond to the hook 23. The hook 23 is hooked onto the corresponding tube, and the hook 23 can rotate relative to the hooked tube.

[0038] Thus, in the first embodiment, the seat cushion spring 20 has three axes of rotation: both sides of the first chain 22 have axes of rotation, and the hook 23 also has an axis of rotation at its attachment point. These three axes of rotation enable the seat cushion spring 20 to adapt to the rearward lifting function of the seat.

[0039] The number of hooks 23 can be set to multiple. In the first embodiment, four hooks 23 are provided.

[0040] like Figure 4 As shown, when the seat cushion spring 20 of the first embodiment is assembled onto the seat 10, the hook 23 is attached to the rear tube 131 of the rear lifting mechanism 13, and the first connecting bracket 24 is fixedly connected to the front seat basin 12. Figure 5 As shown, the rear tube 131 of the rear lifting mechanism 13 is in the designed position (i.e., low position), combined with Figure 6 As shown, the rear tube 131 of the rear lifting mechanism 13 is in the lifted position (i.e., high position), the first chain belt 22 can rotate adaptively relative to the suspension spring frame 21, and the hook 23 is always firmly attached to the rear tube 131, with good structural stability.

[0041] like Figure 2 As shown, when installing the seat cushion suspension spring 20, the hook 23 can also be attached to one side of the front seat basin 12. A tube fitting that cooperates with the hook 23 can be installed at the front seat basin 13. The first connecting bracket 24 is fixedly connected to the rear lifting mechanism 13.

[0042] In the second embodiment, as Figure 3As shown, the connecting mechanism is a second chain 25 movably connected to the second side of the suspension spring frame 21, and the second chain 25 can rotate relative to the suspension spring frame 21. Chains are provided on both sides of the suspension spring frame 21, and one side of each chain (i.e., the first chain 22 and the second chain 25) is rotatably connected to the suspension spring frame 21 so that it can be adjusted relative to the suspension spring frame 21. When installing the seat cushion suspension 20, the other side of the first chain 22 and the second chain 25 can be installed on the corresponding structure, such as one on the seat frame assembly and the other on the rear lifting mechanism 13.

[0043] Furthermore, a second connector 214 is provided on the second side of the suspension spring frame 21 corresponding to the second chain 25; the second chain 25 is sleeved on the second connector 214. By sleeved and installed the second chain 25, the second chain 25 can rotate around the second connector 214.

[0044] Furthermore, such as Figure 1 As shown, the first connector 211 includes a first convex portion 2111 that mates with the first chain belt 22, and is combined with... Figure 3 As shown, and / or the second connecting rod 214 includes a second convex portion 2141 that mates with the second chain belt 25. The first convex portion 2111 and the second convex portion 2141 facilitate the fitting of the first chain belt 22 and the second chain belt 25. The outer surfaces of the first convex portion 2111 and the second convex portion 2141 are smooth surfaces to avoid obstructing the rotation of the first chain belt 22 and the second chain belt 25. The first convex portion 2111 and the second convex portion 2141 are preferably cylindrical structures, but can also be round tubes, round rods, or other arc-shaped structures.

[0045] Furthermore, a limiting part is also provided on the suspension spring frame 21 corresponding to the second chain belt 25 to restrict the movement of the second chain belt 25 relative to the second connecting member 214 on the suspension spring frame 21. The specific structural form of this limiting part is the same as that of the limiting part provided on the suspension spring frame 21 for restricting the movement of the first chain belt 22, and will not be described again here.

[0046] Furthermore, the seat cushion suspension spring 20 also includes a second connecting bracket 26 corresponding to the second chain belt 25; the side of the second chain belt 25 away from the suspension spring frame 21 is sleeved on the second connecting bracket 26, and the second chain belt 25 can rotate relative to the second connecting bracket 26.

[0047] The second connecting bracket 26 is used to install and fix the second chain belt 22. When installing the seat cushion suspension spring 20, the first connecting bracket 24 and the second connecting bracket 26 are fixed on the corresponding structure, such as the seat frame assembly.

[0048] If it is necessary to fix the seat cushion suspension spring 20 of the second embodiment to the wall, Figure 4 When using the seat 10 with the rear lifting mechanism 13 shown, one of the first connecting bracket 24 and the second connecting bracket 26 is fixedly connected to the front seat 12, and the other is fixedly connected to the rear lifting mechanism 13.

[0049] In the second embodiment, the suspension spring frame 21 includes two steel wires, each bent into a square shape. A connecting piece 212 is partially disposed within the square and connected to the steel wires, connecting the two steel wires together. A limiting groove 213 is formed on the connecting piece 212 inside the square to limit the corresponding first chain 22 and second chain 25. Of course, the structure of the suspension spring frame 21 of this utility model is not limited to steel wires; it can also be composed of other components, such as plastic parts, sheet metal parts, etc.; the shape of the suspension spring frame 21 is also not limited to square; it can also be any other shape.

[0050] Preferably, the first chain 22 and the second chain 25 are metal chains in a ring structure.

[0051] like Figure 4 As shown, the present invention also provides a seat 10 having the above-mentioned seat cushion spring 20. The seat 10 includes a seat frame assembly 11 and a rear lifting mechanism 13 disposed on the seat frame assembly 11. The seat cushion spring 20 is mounted on the seat frame assembly 11. One of the connecting mechanism of the seat cushion spring 20 and the first chain 22 is connected to the seat frame assembly 11. The other connecting mechanism and the first chain 22 are connected to the rear lifting mechanism 13.

[0052] Furthermore, a first connecting bracket can be provided at the rear or front of the seat frame assembly 11 corresponding to the first chain 22. That is, the connecting bracket for connecting the chain can be integrated into the seat frame assembly 11, or it can be pre-connected to the seat cushion suspension spring 20 and then installed and fixed to the seat frame assembly 11.

[0053] Furthermore, the rear lifting mechanism 13 can be implemented in the same way as the rear lifting scheme in the prior art (for example, the rear lifting scheme of the rear support component disclosed in the applicant's prior Chinese patent (application number: 202510653535.7, invention name: vehicle seat with seat cushion rear lifting function) can be selected). The rear lifting mechanism 13 can be driven by a separate drive mechanism to achieve rear lifting, or it can be driven by the backrest being folded back in conjunction with the backrest to achieve rear lifting.

[0054] If the seat cushion suspension spring on seat 10 adopts the structure of the first embodiment, such as Figure 1 and Figure 2 , Figures 4 to 6As shown, the connecting mechanism is a hook 23, which is hooked onto the rear tube 131 of the rear lifting mechanism 13. The first connecting bracket 24 used for connecting the first chain belt 22 is fixedly connected to the front seat 12. Alternatively, the first connecting bracket 24 can be fixedly connected to the rear lifting mechanism 13, and the hook 23 can be hooked onto the corresponding tube at the front seat 12.

[0055] If the seat cushion suspension spring on seat 10 adopts the structure of the second embodiment, such as Figure 3 and Figure 4 As shown, one of the first connecting bracket 24 and the second connecting bracket 26 is fixedly connected to the front seat 12, and the other is fixedly connected to the rear lifting mechanism 13.

[0056] The seat cushion suspension spring of this invention can also be applied to seats with a forward lifting function.

[0057] The present invention has been described in detail above with reference to the accompanying drawings and embodiments. Those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention, and the scope of protection of the present invention shall be defined by the appended claims.

Claims

1. A seat cushion suspension spring, characterized in that, include: The suspension spring frame (21) has a first side and a second side that are arranged opposite to each other; A first chain (22) is movably connected to the first side, and the first chain (22) is rotatable relative to the suspension spring frame (21); A connecting mechanism located on the second side.

2. The seat cushion suspension spring as described in claim 1, characterized in that, The first side of the spring frame (21) is provided with a first connector (211) corresponding to the first chain (22); The first chain (22) is fitted onto the first connector (211).

3. The seat cushion suspension spring as described in claim 1, characterized in that, It also includes a first connecting bracket (24) provided corresponding to the first chain (22); The first chain (22) is sleeved on the side away from the suspension spring frame (21) on the first connecting bracket (24), and the first chain (22) can rotate relative to the first connecting bracket (24).

4. The seat cushion suspension spring as described in claim 1, characterized in that, The connecting mechanism is a hook (23).

5. The seat cushion suspension spring as described in claim 1, characterized in that, The connecting mechanism is a second chain (25) movably connected to the second side, and the second chain (25) can rotate relative to the suspension spring frame (21).

6. The seat cushion suspension spring as described in claim 5, characterized in that, The second side of the spring frame (21) is provided with a second connector (214) corresponding to the second chain (25); The second chain (25) is fitted onto the second connector (214).

7. The seat cushion suspension spring as described in claim 5, characterized in that, It also includes a second connecting bracket (26) provided corresponding to the second chain (25); The second chain (25) is sleeved on the side away from the suspension spring frame (21) on the second connecting bracket (26), and the second chain (25) can rotate relative to the second connecting bracket (26).

8. The seat cushion suspension spring as described in claim 5, characterized in that, The spring frame (21) is provided with a limiting part corresponding to the second chain (25) to restrict the movement of the second chain (25) relative to the spring frame (21).

9. The seat cushion suspension spring as described in claim 1, characterized in that, The spring frame (21) is provided with a limiting part corresponding to the first chain (22) to restrict the movement of the first chain (22) relative to the spring frame (21).

10. A seat having a cushion suspension spring as described in any one of claims 1 to 9, characterized in that, It includes a seat frame assembly (11) and a rear lifting mechanism (13) disposed on the seat frame assembly (11); characterized in that one of the connecting mechanism and the first chain belt (22) is connected to the seat frame assembly (11); the other of the connecting mechanism and the first chain belt (22) is connected to the rear lifting mechanism (13).

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